ASR9001 - Erase and fresh install via ROMMON

Update:Using a USB drive/disk in the ASR will take the process of say a 5.3.3 + SP4 install from like 3 hours down to about 1. This can be booted from using the ROMMON command "boot disk1://asr9k-mini-px.vm-5.3.5 -a none -o none"

Update 2:To boot into ROMMON it may not be possible to enter the key sequence CTRL+R via a remote console server. Whilst the box is still running "normaly" setting the config-reg to 0 and then reloading the box will drop it into ROMMON:adminconfig-register 0x0exitreload

An example of an ASR9001 on which the software packages are screwed and it won't boot properly